keyword
MENU ▼
Read by QxMD icon Read
search

Activity tracking

keyword
https://www.readbyqxmd.com/read/28734182/using-medically-derived-iodine-131-to-track-sewage-effluent-in-the-laurentian-great-lakes
#1
Michael P Montenero, Elizabeth K Dilbone, James T Waples
Tracking sewage wastewater in a large lake is difficult. Concentrations of pharmaceuticals that can be used as indicator compounds are quickly diluted and not easy to measure. In this study, we examined the potential of using medically-derived iodine-131 ((131)I, t½ = 8.02 d) as a tracer for Milwaukee sewage effluent in Lake Michigan. (131)I activities in sewage effluent from two Milwaukee wastewater treatment plants (WWTPs) were measured in conjunction with (131)I activities in water, sediment and biota in the Milwaukee Outer Harbor and Lake Michigan...
July 14, 2017: Water Research
https://www.readbyqxmd.com/read/28732268/validation-comparison-and-combination-of-algorithms-for-automatic-detection-of-pulmonary-nodules-in-computed-tomography-images-the-luna16-challenge
#2
Arnaud Arindra Adiyoso Setio, Alberto Traverso, Thomas de Bel, Moira S N Berens, Cas van den Bogaard, Piergiorgio Cerello, Hao Chen, Qi Dou, Maria Evelina Fantacci, Bram Geurts, Robbert van der Gugten, Pheng Ann Heng, Bart Jansen, Michael M J de Kaste, Valentin Kotov, Jack Yu-Hung Lin, Jeroen T M C Manders, Alexander Sóñora-Mengana, Juan Carlos García-Naranjo, Evgenia Papavasileiou, Mathias Prokop, Marco Saletta, Cornelia M Schaefer-Prokop, Ernst T Scholten, Luuk Scholten, Miranda M Snoeren, Ernesto Lopez Torres, Jef Vandemeulebroucke, Nicole Walasek, Guido C A Zuidhof, Bram van Ginneken, Colin Jacobs
Automatic detection of pulmonary nodules in thoracic computed tomography (CT) scans has been an active area of research for the last two decades. However, there have only been few studies that provide a comparative performance evaluation of different systems on a common database. We have therefore set up the LUNA16 challenge, an objective evaluation framework for automatic nodule detection algorithms using the largest publicly available reference database of chest CT scans, the LIDC-IDRI data set. In LUNA16, participants develop their algorithm and upload their predictions on 888 CT scans in one of the two tracks: 1) the complete nodule detection track where a complete CAD system should be developed, or 2) the false positive reduction track where a provided set of nodule candidates should be classified...
July 13, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28731474/bacterial-transcriptome-remodeling-during-sequential-co-culture-with-a-marine-dinoflagellate-and-diatom
#3
Marine Landa, Andrew S Burns, Selena J Roth, Mary Ann Moran
In their role as primary producers, marine phytoplankton modulate heterotrophic bacterial activities through differences in the types and amounts of organic matter they release. This study investigates the transcriptional response of bacterium Ruegeria pomeroyi, a member of the Roseobacter clade known to affiliate with diverse phytoplankton groups in the ocean, during a shift in phytoplankton taxonomy. The bacterium was initially introduced into a culture of the dinoflagellate Alexandrium tamarense, and then experienced a change in phytoplankton community composition as the diatom Thalassiosira pseudonana gradually outcompeted the dinoflagellate...
July 21, 2017: ISME Journal
https://www.readbyqxmd.com/read/28731295/biogeochemistry-of-lead-its-release-to-the-environment-and-chemical-speciation
#4
Jay T Cullen, Jason McAlister
Lead (Pb) is a metal that is not essential for life processes and proves acutely toxic to most organisms. Compared to other metals Pb is rather immobile in the environment but still its biogeochemical cycling is greatly perturbed by human activities. In this review we present a summary of information describing the physical and chemical properties of Pb, its distribution in crustal materials, and the processes, both natural and anthropogenic, that contribute to the metal's mobilization in the biosphere. The relatively high volatility of Pb metal, low melting point, its large ionic radius, and its chemical speciation in aquatic systems contributes to its redistribution by anthropogenic and natural processes...
April 10, 2017: Metal Ions in Life Sciences
https://www.readbyqxmd.com/read/28729949/modeling-the-effect-of-blunt-impact-on-mitochondrial-function-in-cartilage-implications-for-development-of-osteoarthritis
#5
Georgi I Kapitanov, Bruce P Ayati, James A Martin
OBJECTIVE: Osteoarthritis (OA) is a disease characterized by degeneration of joint cartilage. It is associated with pain and disability and is the result of either age and activity related joint wear or an injury. Non-invasive treatment options are scarce and prevention and early intervention methods are practically non-existent. The modeling effort presented in this article is constructed based on an emerging biological hypothesis-post-impact oxidative stress leads to cartilage cell apoptosis and hence the degeneration observed with the disease...
2017: PeerJ
https://www.readbyqxmd.com/read/28729443/theta-and-beta-band-neural-activity-reflect-independent-syllable-tracking-and-comprehension-of-time-compressed-speech
#6
Maria Pefkou, Luc H Arnal, Lorenzo Fontolan, Anne-Lise Giraud
Recent psychophysics data suggest that speech perception is not limited by the capacity of the auditory system to encode fast acoustic variations through neural gamma activity, but rather by the time given to the brain to decode them. Whether the decoding process is bounded by the capacity of theta rhythm to follow speech syllabic rhythm, or constrained by a more endogenous top-down mechanism, e.g. involving beta activity, is unknown. We addressed the dynamics of auditory decoding in speech comprehension by challenging syllable tracking and speech decoding using comprehensible and incomprehensible time-compressed auditory sentences...
July 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28729428/fluorine-18-labeled-carboplatin-derivative-for-pet-imaging-of-platinum-drug-distribution
#7
Narottam Lamichhane, Gajanan K Dewkar, Sundaresan Gobalakrishnan, Li Wang, Purnima Jose, Muhammad Otabashi, Jean-Luc Morelle, Nicholas Farrell, Jamal Zweit
Increasing evidence indicates that reduced intracellular drug accumulation is the parameter most consistently associated with platinum drug resistance, and emphasizes the need to directly measure intra-tumor drug concentration. In the era of precision medicine and with the advent of powerful imaging and proteomics technologies, there is an opportunity to better understand drug resistance, by exploiting these techniques to provide new knowledge on drug-target interactions. Here, we are contributing to this endeavor by reporting on the development of a fluorine-18 labeled carboplatin derivative ((18)F-FCP) that can be used to potentially image drug uptake and retention, including intra-tumoral distribution, by positron emission tomography (PET)...
July 20, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28728993/value-of-tracking-biopsy-in-men-undergoing-active-surveillance-of-prostate-cancer
#8
Edward Chang, Tonye A Jones, Shyam Natarajan, Devi Sharma, Demetrios Simopoulos, Daniel J Margolis, Jiaoti Huang, Frederick J Dorey, Leonard S Marks
PURPOSE: To compare the upgrading rate obtained by re-sampling precise spots of prostate cancer (tracking biopsy) vs conventional systematic re-sampling, during follow-up of; men in active surveillance. MATERIALS AND METHODS: Subjects were all 352 men, from 2009 to 2017, with Gleason 3+3 (n=268) or Gleason 3+4 (n=84) prostate cancer at initial MRI/ultrasound fusion biopsy and who subsequently had a second fusion biopsy. At first biopsy session, all men underwent 12-core systematic biopsies and, when MRI-visible lesions were present, targeted biopsies...
July 17, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28727821/advances-in-using-internet-searches-to-track-dengue
#9
Shihao Yang, Samuel C Kou, Fred Lu, John S Brownstein, Nicholas Brooke, Mauricio Santillana
Dengue is a mosquito-borne disease that threatens over half of the world's population. Despite being endemic to more than 100 countries, government-led efforts and tools for timely identification and tracking of new infections are still lacking in many affected areas. Multiple methodologies that leverage the use of Internet-based data sources have been proposed as a way to complement dengue surveillance efforts. Among these, dengue-related Google search trends have been shown to correlate with dengue activity...
July 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28727640/no-seasonal-changes-in-cognitive-functioning-among-high-school-football-athletes-implementation-of-a-novel-electrophysiological-measure-and-standard-clinical-measures
#10
Steven P Broglio, Richelle Williams, Ashley Rettmann, Brandon Moore, James T Eckner, Sean Meehan
OBJECTIVE: To evaluate neuroelectric and cognitive function relative to a season of football participation. Cognitive and neuroelectric function declines are hypothesized to be present in football athletes. DESIGN: Observational. SETTING: Athletic fields and research laboratory. PATIENTS (OR PARTICIPANTS): Seventy-seven high school athletes (15.9 + 0.9 years, 178.6 + 7.2 cm, 74.4 + 14.7 kg, and 0.8 + 0.8 self-reported concussions) participating in football (n = 46) and noncontact sports (n = 31)...
July 14, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28727490/comparison-of-the-release-of-micrornas-and-extracellular-vesicles-from-platelets-in-response-to-different-agonists
#11
Ashley R Ambrose, Mohammed A Alsahli, Sameer A Kurmani, Alison H Goodall
On activation platelets release microRNAs and extracellular vesicles (EV) into circulation. The release of EV from platelets has been shown to be dependent on the agonist; in this study, we investigated whether the microRNA profile or EV released from platelets was also agonist specific. Washed platelets from healthy subjects were maximally stimulated with agonists specific for the receptors for collagen (Glycoprotein VI (GPVI)), thrombin (PAR1/PAR4), or ADP (P2Y1/P2Y12) with/without inhibiting secondary mediators, using aspirin to block cyclooxygenase-1 and apyrase to remove ADP...
July 20, 2017: Platelets
https://www.readbyqxmd.com/read/28727416/in-situ-electrochemical-sensing-and-real-time-monitoring-live-cells-based-on-freestanding-nanohybrid-paper-electrode-assembled-from-3d-functionalized-graphene-framework
#12
Yan Zhang, Jian Xiao, Qi-Ying Lv, Lu Wang, Xulin Dong, Muhammad Asif, Jinghua Ren, Wenshan He, Yimin Sun, Fei Xiao, Shuai Wang
In this work, we develop a new type of freestanding nanohybrid paper electrode assembled from 3D ionic liquid (IL) functionalized graphene framework (GF) decorated by gold nanoflowers (AuNFs), and explore its practical application in in-situ electrochemical sensing of live breast cell samples by real-time tracking biomarker H2O2 released from cells. The AuNFs modified IL functionalized GF (AuNFs/IL-GF) was synthesized via a facile and efficient dopamine assisted one-pot self-assembly strategy. The as-obtained nanohybrid assembly exhibits a typical 3D hierarchical porous structure, where the highly active electrocatalyst AuNFs are well dispersed on IL-GF scaffold...
July 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28726643/reconstructed-ancestral-enzymes-reveal-that-negative-selection-drove-the-evolution-of-substrate-specificity-in-adp-dependent-kinases
#13
Víctor Castro-Fernandez, Alejandra Herrera-Morande, Ricardo Zamora, Felipe Merino, Felipe Gonzalez-Ordenes, Felipe Padilla-Salinas, Humberto M Pereira, Jose Brandão-Neto, Richard C Garratt, Victoria Guixe
One central goal in molecular evolution is to pinpoint the mechanisms and evolutionary forces that cause an enzyme to change its substrate specificity; however, these processes remain largely unexplored. Using the glycolytic ADP-dependent kinases of archaea, including the orders Thermococcales, Methanosarcinales, and Methanococcales, as a model and employing an approach involving paleoenzymology, evolutionary statistics, and protein structural analysis, we could track changes in substrate specificity during ADP-dependent kinase evolution along with the structural determinants of these changes...
July 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28726598/pandemic-related-health-behavior-repeat-episodes-of-influenza-like-illness-related-to-the-2009-h1n1-influenza-pandemic
#14
O Mgbere, K Ngo, S Khuwaja, M Mouzoon, A Greisinger, R Arafat, J Markee
The Houston Health Department (HHD) in Texas tracks influenza-like illness (ILI) in the community through its Influenza Sentinel Surveillance Program, which began in 2008. After the influenza A(H1N1) pandemic (pH1N1) in 2009, investigators sought to assess the feasibility of this program as a non-traditional data source for tracking and monitoring care-seeking activities. Through the process of characterizing and describing patients who had 'return visits', or who were considered the heaviest ILI-related care-utilizers, the investigators sought to understand the strengths and limitations of this data source...
July 20, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28725549/performance-of-unscented-kalman-filter-tractography-in-edema-analysis-of-the-two-tensor-model
#15
Ruizhi Liao, Lipeng Ning, Zhenrui Chen, Laura Rigolo, Shun Gong, Ofer Pasternak, Alexandra J Golby, Yogesh Rathi, Lauren J O'Donnell
Diffusion MRI tractography is increasingly used in pre-operative neurosurgical planning to visualize critical fiber tracts. However, a major challenge for conventional tractography, especially in patients with brain tumors, is tracing fiber tracts that are affected by vasogenic edema, which increases water content in the tissue and lowers diffusion anisotropy. One strategy for improving fiber tracking is to use a tractography method that is more sensitive than the traditional single-tensor streamline tractography...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28722643/aural-rehabilitation-for-older-adults-with-hearing-loss-impacts-on-quality-of-life-a-systematic-review-of-randomized-controlled-trials
#16
Helen N Michaud, Louise Duchesne
BACKGROUND: Few systematic reviews have been conducted regarding aural rehabilitation for adults with hearing loss, with none specifically targeting the older adult population. With prevalence rates of hearing loss being highest in older adults, examining the effects of aural rehabilitation on this population is warranted. PURPOSE: To evaluate the effects of aural rehabilitation on quality of life in an older adult population presenting with hearing loss. ELIGIBILITY CRITERIA: Studies with adults presenting with hearing loss, ≥50 yr of age, with or without hearing aids, receiving interventions such as auditory training, speech-reading, communication strategies training, speech tracking, counseling, or a combination of approaches, and measuring outcomes related to quality of life, in an individual or group format, with or without significant others and with no limitations as to year of publication...
July 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28722314/prospective-motion-correction-using-coil-mounted-cameras-cross-calibration-considerations
#17
Julian Maclaren, Murat Aksoy, Melvyn B Ooi, Benjamin Zahneisen, Roland Bammer
PURPOSE: Optical prospective motion correction substantially reduces sensitivity to motion in neuroimaging of human subjects. However, a major barrier to clinical deployment has been the time-consuming cross-calibration between the camera and MRI scanner reference frames. This work addresses this challenge. METHODS: A single camera was mounted onto the head coil for tracking head motion. Two new methods were developed: (1) a rapid calibration method for camera-to-scanner cross-calibration using a custom-made tool incorporating wireless active markers, and (2) a calibration adjustment method to compensate for table motion between scans...
July 19, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28721726/3d-printed-earable-smart-devices-for-real-time-detection-of-core-body-temperature
#18
Hiroki Ota, Minghan Chao, Yuji Gao, Eric Wu, Li-Chia Tai, Kevin Chen, Yasutomo Matsuoka, Kosuke Iwai, Hossain M Fahad, Wei Gao, Hnin Yin Yin Nyein, Liwei Lin, Ali Javey
Real-time detection of basic physiological parameters such as blood pressure and heart rate is an important target in wearable smart devices for healthcare. Among these, the core body temperature is one of the most important basic medical indicators of fever, insomnia, fatigue, metabolic functionality, and depression. However, traditional wearable temperature sensors are based upon the measurement of skin temperature, which can vary dramatically from the true core body temperature. Here, we demonstrate a three-dimensional (3D) printed wearable "earable" smart device that is designed to be worn on the ear to track core body temperature from the tympanic membrane (i...
July 19, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28721177/antiretroviral-therapy-outcomes-among-hiv-infected-clients-in-gweru-city-zimbabwe-2006-2011-a-cohort-analysis
#19
Gerald Shambira, Notion Tafara Gombe, Casey Daniel Hall, Meeyoung Mattie Park, Joseph Asamoah Frimpong
The government of Zimbabwe began providing antiretroviral therapy (ART) to People Living with HIV/AIDS (PLHIV) in public institutions in 2004. In Midlands province two clinics constituted the most active HIV care service points, with patients being followed up through a comprehensive patient monitoring and tracking system which captured specific patient variables and outcomes over time. The data from 2006 to 2011 were subjected to analysis to answer specific research questions and this case study is based on that analysis...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28720488/hormonal-correlates-of-natal-dispersal-and-rank-attainment-in-wild-male-baboons
#20
Mercy Y Akinyi, Laurence R Gesquiere, Mathias Franz, Patrick O Onyango, Jeanne Altmann, Susan C Alberts
In many mammals, maturational milestones such as dispersal and the attainment of adult dominance rank mark stages in the onset of reproductive activity and depend on a coordinated set of hormonal and socio-behavioral changes. Studies that focus on the link between hormones and maturational milestones are uncommon in wild mammals because of the challenges of obtaining adequate sample sizes of maturing animals and of tracking the movements of dispersing animals. We examined two maturational milestones in wild male baboons-adult dominance rank attainment and natal dispersal-and measured their association with variation in glucocorticoids (fGC) and fecal testosterone (fT)...
July 15, 2017: Hormones and Behavior
keyword
keyword
111335
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"